Auxiliary-reservoir release valve



Feb. 24, 1931. J. c. MCCUNE 1,793,628

AUXILIARY RESERVOIR RELEASE VALVE Filed Jan. 10, 1929 glW/y/lfl INVENTORJOSEPH C. McCUNE BYWWM ATTORNEY Patented Feb. 24, 1931.

' 5 aosnrir c. MccUNE, 0F EnGEwooD, PENNSYLVANIA, Assr'ejNon' Tainan"WES'IZENG- 'HOUSE AIR BRAKE coMPANxoF WILMERDING, rE NsYLv-Ama, ACQBPORAT'IONV OF PENNSYLVANIA V r AUXILIARY-RESERVOIR RELEASE vanv'na vY mentioned which is simple in construction,

Q Application filed January 10, 1329 Serial=Noi ii3lgi77;it;- i 2' Thisinvention relates to release valves and more particularly to a valvedevice for eflecting therelease of fluid under pre'ssure from theauxiliary reservoir of a fluid pressure vide a valve'device of thecharacter specified with improved actuating mechanism.

Another ob]ect of the invention 1s to provide a release valve devlce ofthe character and reliable and exact in function under all conditions ofservice.

. The invention also comprises certain new and useful improvements inthe construction,

" arrangement and combination of the several parts of which it iscomposed, as will be here-. inafter more fully described and claimed.

7 In the accompanying'drawings; Figure 1 is a plan of a release valvedevice constructed according to the invention; and Fig.2 is a verticallongitudinal section thereof.

Referring to the drawings, the release valve device may comprise acasing 11 having chamber 12,, cont ining a release valve 13 adapted inits seated position to engage a seat ring 14' and cut off communicationbetween chamber 12 and a chamber 22- opento the atmosphere through anopening The casing 11 is secured by screw-threads to a plug 15 which isscrewed into a threaded open ng 16 of the auxiliary reservoir 17 andwhich isprovided with a passage 18 connecting the auxiliary reservoirwith the chamber 12.

through an opening in the end wall of the casing 11, and has a capscrew-threaded to The valve 13 has astem 19 which projects the endthereof.

As shown in'Fig. 2,-the skirt of theta 20 a encloses the portion of thestem 19 projecting beyond the casingll and-a coil spring 21 whichencircles the stem 19 and valve 13 toward the seat ring 1% The rim ofthe skirt of the cap is spaced a urges the suitable distance from theend wall of the '20 and is disposed between the casing when the valve?and when the valve is moved away from the seat 14, the rim offthes'kifrtof the ga engages the end wall of. thecasing 11'. to .limit'fth'e' theother arm 31 of said lever may extend over the end wall of the cap20,and be forked,

as shown best in Fig. 1.

brake system. inwardmovement.of the valve 13, jas-.wi1l'be 3 An objectof the invention is to provide an readily understood. i improved releasevalve device having an un- 'Theca'sing 11 is 'pfov'ided with .apair 0frestricted atmospheric vent that is not apt spaced bracketplates 24;carrying'pins25 and to clog with dirt or other foreign matter. 26 onwhichllevers27 and 28 are pivotally Another object of the invention isto promounted.

Thelever 28 has one arm 32 connected to anfioperating rod 33, andanother arm 34 which extends over the end wall of the cap forks of thearm 81 of the lever 27. x

The rods 30, 33 extend to the opposite sides of the vehicle and theconstructionand arrangement of the parts is such that when either ofthese rods is operated in the usual well known manner, either ofthelevers 27, v

depress the cap'20,

28 will be actuated to thereby unseating the valve 13 and releasing thefluid in chamber'l2.

- While one illustrativeembodiment of the invention has been describedin detail, it is not my intention to limit its scope to that em bodimentor otherwise than by the terms of.

theiappended claims. I I Having now described my invention, what I claimasnew anddesire to secure by Letters Patent, is

1. In a fluid pressure release valve device, tlIG -COIIIbIIIZLtIOII wltha casing and a valve mounted in said casing and having. a stemprojecting therethrough, of means disposed exteriorly of the casingfor'urging said valve toward its seat,f means for operating the; valve,and means carried the combination with a casing and a valve ytheprojecting. portion of the valvestem for. limiting th from its seat.

mounted in said; casing, of a stem carried by I i said valve and.projecting through the casing,

a cap fixed to the extremity of the stem and being spaced from thecasing When the valve is seated, means disposed exteriorly of the casingfor urging said valve toward its seat,

- and means engaging the exterior of said cap for operating said-"valve,the movement of the'val've away fro'mits seat'being arrested" when thecap engages the casing.

3; In a' fluidpressnre release valve device, 7 thecomblnation with a-casng and a release valve mounted 1n said caslng, of a stem car ried bysaid valve and projecting through the casing, of the valve stem andhaving a skirt surrounding the maj or portion of the valve stemprojecting from the casing, the rim of the skirt beingfspa'eed fromthe"'easing when the valve is seated; a spring encirelingthe valve stemand disposed Within} the 'cap, and

means engaging said "oap f'or operating the valve, the movement 'oftheva lve operating means beinglimited when the rim of'the cap skirtengages the casing.

In testimony'i'vhereof I have. hereunto set my hand this'7th day 'ofJanuary','1929.

1 JOSEPH '0. MGGUNE.

a cap mounted on the-extremity

